LONDON - Brent crude futures fell by more than $2 a barrel on Monday to their lowest level since March 2009 on concerns over the outlook for demand after Chinese stock markets suffered their biggest one-day fall since the global financial crisis. Brent crude futures touched an intra-day low of $43.28 a barrel, down $2.18 on Friday’s closing price. (Reporting by Karolin Schaps; editing by Jason Neely)